In the 19th century, miners faced potentially deadly gases that were odorless and tasteless. To protect themselves, they would first lower canaries in the shaft. If the birds survived, all was well. If not, the miners waited until the shaft could be ventilated. Roger Milliken believes he knows how the canaries felt. For more than two decades, Milliken has been an active and vocal leader for the textile industry, decrying what he says are unfair foreign trade practices and poorly designed trade agreements. While the textile industry was reeling, Milliken predicted other industries would soon fall ill. In the 20...